Chables nelson



(No Model) c. NELSON.

MACHINE FOR FORMING MUPFLING STRIPS FOR SLATE FRAMES. No. 281,787. Patented July 24, 1883.

INVENTOR /M BY Tif N PE TERS. Pnolo-umn n w, Wahimcn. D. C.

UNITED STATES PATENT I OFFICE.-

oHAELEs NELsoN,. OF EAST NEW YORK, N. Y.

MACHINE FOR FORMING MUFFLlNG-STRIPS FOR SLATE-FRAMES.

SPECIFICATION forming part of Letters Patent No. 281,787, dated July 24;, 1883.

Application filed March 31, 1883. (No model.)

To aZZ whom it may concern:

Be it known that I, CHARLES NELsoN, of East New York, in the county of Kings and State of New York, have invented certain new and useful Improvements in Guides for Making Spirally-Cor'ded Muffling-Strips for Slate- Frames, of which the following is a specification.

This invention has reference to an improved guide device for making spirally-corded noisemuffling strips for slate-frames in a cheap, quick, and uniform manner without the employment of specially-skilled hands; and the invention consists of a guide composed of a base part having parallel guide-pieces that are inclined at a suitable angle to the longitudinal axis of the base, and of somewhat greater width at the top than at the base. The upper edges of the guide-pieces are centrally recessed, equal to the width of the muffling-strip, which is placed into the recesses and then covered with fabric and a spirally-wound retainingcord.

In the accompanying drawings, Figure 1 represents a side elevation, Fig. 2 a plan, and Fig. 3 a vertical transverse section on line y y, Fig. 2, of my improved guide for making spirally-corded muffling-strips for slate-frames.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the base of my improved guide for making spirally-corded noise-muffling strips for slate-frames, which base is made of T-shaped cross-section, and

' secured to wooden supporting side pieces of suitable thickness. The base A is provided with a number of upright parallel guide-pieces, B, that are arranged at asuitable angleof inclination to the longitudinal axis of the guide, according to the pitch that is to be given to the cord to be wound spirally around the muffling-strip. Between the guide-pieces B Bin-. termediate recesses, I) b, are formed, which are wider at-the base than at the top, as the guidepieces B are made wider at the top than at the bottom. The upper surface of the guidepieces B B is centrally grooved in the direction of the longitudinal axis of the guide, the grooves 12 b being equal in width and depth to the stripd to be corded:

In making the noise-muffling strip a flannel covering, 6, is first placed into the groove, and then the wooden strip d pressed down on the flannel into the groove. A cord, f, is then passed through the first recess 12, at one end of the guide at the lower wider part of the recess, then drawn taut diagonally across the top of the strip and around the edge of the same, then in the next recess b, below the strip, to the other side, then again diagonally over the strip, and so on through all the recesses, whereby the flannel covering is tightly applied to the strip and the cord wound in spiral and equidistant convolutions around the same. The spirally-corded strip is finally removed from the guide and applied around the edge of a slate-frame, so as to muffle the noise in handling the slate and protect the same against 1n ury.

' Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. A guide for making spirally-corded noisea base, A, laterally-inclined guide-piecesB B,

and intermediate recesses, b b, the guidepieces B being narrower at the base than at the top,

and provided with central top recesses, b b,

in line with the longitudinal axis of the guide device, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing witnesses.

CHARLES NELSON. Witnesses:

CARL KARI, SIDNEY MANN. 

